EP2084789A1 - Sliding contact arrangement with wear elimination - Google Patents

Sliding contact arrangement with wear elimination

Info

Publication number
EP2084789A1
EP2084789A1 EP07856178A EP07856178A EP2084789A1 EP 2084789 A1 EP2084789 A1 EP 2084789A1 EP 07856178 A EP07856178 A EP 07856178A EP 07856178 A EP07856178 A EP 07856178A EP 2084789 A1 EP2084789 A1 EP 2084789A1
Authority
EP
European Patent Office
Prior art keywords
collecting container
sliding contact
contact arrangement
cover
air flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07856178A
Other languages
German (de)
French (fr)
Other versions
EP2084789B1 (en
Inventor
Harry Schilling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schleifring und Apparatebau GmbH
Original Assignee
Schleifring und Apparatebau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schleifring und Apparatebau GmbH filed Critical Schleifring und Apparatebau GmbH
Publication of EP2084789A1 publication Critical patent/EP2084789A1/en
Application granted granted Critical
Publication of EP2084789B1 publication Critical patent/EP2084789B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/46—Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing
    • H01R39/48—Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing by air blast; by surrounding collector with non-conducting liquid or gas
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/28—Cooling of commutators, slip-rings or brushes e.g. by ventilating

Definitions

  • the invention relates to a Schleifternan- order and in particular a system for removing particles and abrasion, which arise through the movement of a sliding contact along a contact track.
  • Sliding contact arrangements are used for the electrical connection and in particular for the transmission of signals between mutually movable units.
  • a brush is here in electrical contact with a grinding path and can be moved relative to this. Basically, this can perform linear or rotary movements according to the arrangement of the web.
  • the term brush member or brush means any brush, wire or pin contact that may be made of metal, conductive plastics, carbon materials, and other materials known in the art. It is essential that it has at least a minimum electrical conductivity.
  • the slideway is usually made of a metal, such as brass or stainless steel.
  • a slip ring system for computer tomographs is disclosed in JP 06 005 340.
  • a separately arranged dust removal unit comprises a dust collector and a tube through which the dust can be extracted.
  • a slip ring system for computer tomographs has a sanding track with a brush running thereon and an abrasion-collecting device.
  • This Abriebsammei Huawei can be charged electrostatically. It has been shown that this arrangement is no longer able to absorb the resulting abrasion, especially in computer tomographs of recent date with increased current load of the sliding tracks and thus an increased number of brushes.
  • the object of the invention is to further improve a grinding contact arrangement, in order to collect abrasion and dirt, which are caused in particular by the grinding of the brush on the slideway, and thus to avoid a strong pollution of the environment. Furthermore, the maintenance intervals are to be extended by the device according to the invention.
  • the device comprises a grinding contact arrangement with at least one grinding path, a brush holder for receiving at least one brush, which is arranged in mechanical engagement and electrical contact with the grinding path. Furthermore, a collecting container for receiving abrasion particles and other materials from the at least one brush or the at least one grinding path is provided. Furthermore, a cover is provided which essentially comprises a brush holder and the at least one brush. The cover has walls which extend parallel to the path of the grinding path and enclose them laterally together with the brush block and the at least one brush. In large sliding contact arrangements is not covered by the cover, the entire grinding path in length, but only a segment, which preferably the length of the sliding track running brush assembly corresponds, enclosed. A collecting container is provided on one side of the cover, so that the air flow resulting from the movement is introduced into this collecting container.
  • a cover 5 or a protective housing is attached to those parts of the sliding contact arrangement in which abrasion is produced and distributed. These parts are the contact surfaces of the abrasive brushes 1 in conjunction with the slip paths 2. Also included is a portion of the downstream side of these surfaces. When the grinding path 2 is moved relative to the grinding brush 1, the abraded material is discharged into the surrounding space and carried on mainly by the air flow in the direction of the arrow 7 on. This is illustrated in FIGS. 1 and 3. A sump 4 is disposed downstream of the contact points between the abrasive brushes 1 and the slideways 2 to catch the abraded material.
  • the cover 5 for covering the sliding contact arrangement assumes the function of an air duct at the same time here. This leads the air flow, which carries the abrasion particles, into the collecting container 4. By collecting the material, the amount of abrasive material distributed in the vicinity of the sliding contact arrangement is reduced.
  • wings 12 may be provided according to the invention. These are preferably attached to the support 11 which carries the sliding tracks 2.
  • the collecting container can also be connected to the cover via further air guide elements, such as at least one tube, or a hose.
  • a compressor or a fan may be provided here.
  • a fan may be provided.
  • wings 12 to increase the air flow, instead of the supply 8, an opening, optionally provided with Heilgleit vom for introducing the air flow generated by the wings 12 in the cover 5.
  • a negative pressure can also be provided on the outlet side of the cover 5 or of the collecting container 4. Likewise, a combination of overpressure and negative pressure is possible.
  • the cover 5 advantageously comprises a metal sheet. Thus, it can be used simultaneously as an electrical shielding. In addition, an electrostatic charge can be prevented by the metallic surface. But it can also be an additional high-ohmic, poorly conductive surface with a surface resistance between a kohm and 10 MOhm, for example as a paint or in another form of heatnbeSichtung be applied. This can eliminate the risk of a short circuit when touching other metal parts. But it is also avoided the attraction of electrostatic dust from the air of the environment. Such a poorly conductive surface on the inside of the cover 5 is particularly favorable. This prevents the dust from depositing on the inside of the cover 5 before it has been conveyed to the collecting container 4.
  • the cover can be made of an insulating material, for example made of plastic. Again, a conductive surface, as described above, may be provided again.
  • the brush block 3 may be part of the cover 5. Alternatively, it can also be enclosed by them.
  • the inner walls of the cover 5 and the air guide plates 10 should be designed so that they have no sharp edges and undercuts on which dust can be deposited.
  • the air guide plates 10 could be arranged to direct the flow of air away from inner corners of the cover 5, so that no swirling occurs there.
  • the inner surfaces of the cover 5, the air guide plates 10, the collecting container 4 and the carrier of the grinding tracks 11 could be provided with a repellent surface. This can be for example a surface with lotus effect or other structures of micro- and nanoparticles.
  • at least one edge or other structure may be provided within the cover to one generate turbulent airflow. Such turbulence can be helpful in removing the debris from a surface or slideway, its support, or a portion of the brush assembly.
  • the collecting container is preferably a dust filter, which is mounted downstream of the cover 5. It could contain an electrostatic filter or an electronic filter.
  • the collecting container 4 material which holds dirt particles, such as tissue or plush included.
  • the sump could have a dust bag, such as in vacuum cleaners.
  • the dust bag is preferably replaceable or mounted in an exchangeable cassette. Such a cassette can be easily replaced and / or cleaned.
  • the collecting container 4 may have a non-stick coating.
  • a coating comprises a lotus effect coating and / or other combinations with micro- and nanoparticles.
  • the collecting container may have at least one guide surface for diverting the air flow in the interior of the collecting container. Through this also turbulence could be generated. As a result, the deposition of the dust inside the collecting container can be improved.
  • flaps or wings are provided to redirect the air flow according to the direction of rotation. Furthermore, the air flow caused by the rotating parts is used to blow or suck air into the sump.
  • the underside of the collecting container for receiving dirt particles, which fall down due to gravity is formed.
  • a special surface for receiving the particles preferably of a porous material, such as polyurethane foam, or of a fabric or plush be provided.
  • means for active or passive adjustment of the air flow in dependence on the sliding tracks are provided.
  • This can be realized for example by the adaptation of wing flaps or by controlling the blowing direction of a fan or another filter on another side of the cover 5.
  • adaptation of the air flow to the rotational speed and / or the direction of rotation can also be effected by the adaptation of flaps.
  • the air flow in or through the filter can be maximized depending on the direction of rotation and rotational speed in order to ensure optimum particle removal.
  • a limitation of the flow velocity can be provided in order to avoid flow noise at higher rotational speeds.
  • upstream and downstream refer to the air flow created in the sliding contact assembly by the movement.
  • Such an air flow may be caused by the movement of the brush block relative to the grinding path and / or the environment or by the movement of the grinding path relative to the brush block.
  • the course of the air flow is always from upstream to downstream.
  • Fig. 1 shows in longitudinal section an embodiment of a sliding contact arrangement according to the invention.
  • Fig. 2 shows a section perpendicular to the line A-A of FIG. 1, viewed from the left side of the arrangement of Fig. 1.
  • Fig. 3 shows a longitudinal section through another embodiment of a sliding contact arrangement according to the invention.
  • Fig. 4 shows a collecting container with a turbulent air flow.
  • a section of a device according to the invention is shown in section.
  • four brushes each accommodated in a quiver 13, are provided here.
  • a sliding contact arrangement has at least one brush. However, it can also have a large number of brushes, for example 20 brushes, in accordance with the current to be transmitted. If several current paths or signal paths are provided at the same time, the corresponding number of brushes are separated for each path and run on the tracks assigned to it.
  • a typical computer tomograph grinding contact assembly may include 50 or more brushes.
  • the brushes are combined in a brush block 3.
  • a brush block typically receives and contacts the quivers of the brushes. There are certain configurations in which several brush blocks are provided.
  • the brushes are in sliding contact with at least one grinding track 2, which is arranged on a carrier 11.
  • the sliding track moves in the direction represented by the arrow 6 with respect to the stationary brush block.
  • a cover 5 encloses the entire brush block 3 together with the brushes 1.
  • the cover has side walls which extend parallel to the sliding tracks 2 and laterally to the brush block 3 with the brushes 1. It is enclosed by the cover 5 of the brush block 3 with the brushes 1 and at least part of the sliding tracks 2, which is in engagement with the brushes 1.
  • a collecting container 4 for particles of the abraded material is downstream is provided by the brush block 3 on an end surface of the cover 5.
  • the cover 5 is designed as an air duct to guide the air flow caused by the movement of the grinding path 2. With this air flow, the particles of the abrasive material are guided by the brushes 1 along the direction of the arrow 7 into the collecting container.
  • Fig. 2 is a section perpendicular to the illustration of FIG. 1 along the line A-A, viewed from the left side, shown. Shown are three sliding tracks 2, which are mounted side by side on the support 11. Furthermore, three brushes 1 are shown in engagement with the sliding tracks 2. According to FIG. 1, four brushes are arranged in succession for each grinding path, of which only one is visible in FIG. 2. The arrangement shown here thus has 12 brushes.
  • the walls of the cover 5 enclose the brush holder 3, together with the brushes 1 in the quivers 13. The cover extends close to the support of the slideways, so that it surrounds the segment of the slideways in the vicinity of the brush as well as possible.
  • Fig. 3 is a representation, similar to that shown in FIG. 1.
  • a supply line 8 is provided at the upstream end of the cover 5 in order, for example, to blow compressed air or another gas into the arrangement, and thus to flow in the direction of the downstream flow. down to the end on the other side of the cover.
  • air guide plates 10 are still provided to guide the air flow, as shown for example by the arrow 7, in specific directions or to swirl targeted. These guide plates can be used in any other combination, even without the feed tube 8.
  • wings 12 are still shown, which are attached to the carrier 11 of the sliding tracks 2, to produce an additional flow. These wings are with any other design, for example, derj enigen of FIG. 1 combinable.
  • Fig. 4 shows a collecting container in which the air is guided over an edge 9 in order to generate turbulence.
  • turbulence is achieved here by demolition of the flow along a surface at the end of the surface.
  • the air can now leave the sump through holes 14, which can be further filtered by another filter, in particular by an electrostatic filter.
  • the turbulences in the interior of the collecting container ensure that dust particles from the air flow inside the collecting container precipitate and are deposited there. This effect can be favorably influenced by gravity.
  • the speed is reduced and they can be trapped in traps.
  • These traps either have their own wings or plates, preferably of a porous material, which repels the turbulent air to prevent further distribution of the dust.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Elimination Of Static Electricity (AREA)
  • Electrostatic Separation (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Cleaning In General (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Brushes (AREA)
  • Electric Vacuum Cleaner (AREA)

Abstract

A sliding contact arrangement comprises at least one slideway and, running thereon, at least one brush. Furthermore, a collecting vessel is provided through which the air flow caused by the movement of the slideway with respect to the brush flows. At the end of the cover, a collecting vessel for accommodating the particles transported by the air flow is provided. The collecting vessel can have a filter or else additional means for producing turbulence with the result that the air flow discharges the particles in the filter.

Description

Schleifkontaktanordnung mit Abriebentfernung Sliding contact arrangement with abrasion removal
BE SCHREIBUNGDESCRIPTION
Technisches GebietTechnical area
Die Erfindung bezieht sich auf eine Schleifkontaktan- ordnung und insbesondere ein System zur Entfernung von Partikeln und Abrieb, die durch die Bewegung eines Schleifkontakts entlang einer Kontaktbahn entstehen. Schleifkontaktanordnungen werden zur elektrischen Verbindung und insbesondere zur Übertragung von Signalen zwischen gegeneinander beweglichen Einheiten verwendet. Eine Bürste steht hier im elektrischen Kontakt zu einer Schleifbahn und kann gegenüber dieser bewegt werden. Grundsätzlich kann diese entsprechend der Anordnung der Bahn lineare oder aber Drehbewegungen ausführen. Der Begriff Bürstenelement oder Bürste steht hier für jeden bürstenförmigen, drahtförmigen oder stiftförmigen Kontakt, der aus Metall, leitenden Kunststoffen, Kohlematerialien und anderem, aus dem Stand der Technik bekannten Materialien bestehen kann. Wesentlich ist, dass er zumindest eine minimale elektrische Leitfähigkeit aufweist. Die Schleifbahn besteht meistens aus einem Metall, wie Messing oder Edelstahl. Sie kann aber auch aus anderen Materialien, beispielsweise Widerstandsmaterialien gefertigt sein. Durch die mechanische Bewegung zwischen der Bürste und der Schleifbahn werden kleine Partikel abgeschliffen. Da diese Partikel von den Kontaktmaterialien der Bürste bzw. der Schleifbahn stammen, sind sie meistens gut leitend. Diese Partikel bilden einen feinen Staub, der sich auf die Isolation der Schleifkontaktanordnung und anderen Bauteilen absetzt. Dadurch werden im Laufe der Zeit die Isolationseigenschaften erheblich verschlechtert. Dies kann schließlich zu Durchschlägen und Ab- brand der Isolation führen. Ebenso kann dies zu einer Fehlfunktion oder Beschädigung von anderen Teilen, insbesondere von elektrischen oder elektronischen Komponenten führen. Um dies zu vermeiden muss eine regelmäßige Wartung, häufig in relativ kurzen Intervallen, durchgeführt werden. Derartige Wartungen sind zeit- und kostenintensiv, da der fest anhaftende Staub auch aus kleinsten Vertiefungen der Anordnung entfernt werden muss .The invention relates to a Schleifkontaktan- order and in particular a system for removing particles and abrasion, which arise through the movement of a sliding contact along a contact track. Sliding contact arrangements are used for the electrical connection and in particular for the transmission of signals between mutually movable units. A brush is here in electrical contact with a grinding path and can be moved relative to this. Basically, this can perform linear or rotary movements according to the arrangement of the web. As used herein, the term brush member or brush means any brush, wire or pin contact that may be made of metal, conductive plastics, carbon materials, and other materials known in the art. It is essential that it has at least a minimum electrical conductivity. The slideway is usually made of a metal, such as brass or stainless steel. But it can also be made of other materials, such as resistance materials. Due to the mechanical movement between the brush and the grinding path, small particles are abraded. Since these particles come from the contact materials of the brush or the slideway, they are usually well-conductive. These particles form a fine dust that Depends on the insulation of the sliding contact arrangement and other components. As a result, the insulation properties are significantly deteriorated over time. This can eventually lead to breakdown and erosion of the insulation. Likewise, this can lead to malfunction or damage of other parts, in particular of electrical or electronic components. To avoid this, regular maintenance must be performed, often at relatively short intervals. Such maintenance is time-consuming and expensive, since the firmly adhering dust must be removed even from the smallest recesses of the arrangement.
Stand der TechnikState of the art
Ein Schleifringsystem für Computertomografen ist in der JP 06 005 340 offenbart. Die Übertragung elektrischer Energie erfolgt mittels einer Bürste, die entlang einem Ring läuft. Eine separat angeordnete Staubentfernungs- einheit umfasst einen Staubsammelbehälter und eine Röhre, durch die der Staub abgesaugt werden kann.A slip ring system for computer tomographs is disclosed in JP 06 005 340. The transmission of electrical energy by means of a brush that runs along a ring. A separately arranged dust removal unit comprises a dust collector and a tube through which the dust can be extracted.
Ein Schleifringsystem für Computertomografen, wie es beispielsweise in der DE 10 543 383 B4 offenbart ist, weist eine Schleifbahn mit einer darauf laufenden Bürste sowie eine Abriebsammeieinrichtung auf. Diese Abriebsammeieinrichtung kann elektrostatisch aufgeladen werden. Es hat sich gezeigt, dass diese Anordnung insbesondere bei Computertomografen neueren Datums mit erhöhter Strombelastung der Schleifbahnen und somit einer erhöhten Bürstenzahl nicht mehr in der Lage ist, den anfallenden Abrieb aufzunehmen. Darstellung der ErfindungA slip ring system for computer tomographs, as disclosed, for example, in DE 10 543 383 B4, has a sanding track with a brush running thereon and an abrasion-collecting device. This Abriebsammeieinrichtung can be charged electrostatically. It has been shown that this arrangement is no longer able to absorb the resulting abrasion, especially in computer tomographs of recent date with increased current load of the sliding tracks and thus an increased number of brushes. Presentation of the invention
Eine erfindungsgemäße Lösung dieser Aufgabe ist in den unabhängigen Patentansprüchen angegeben. Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche .An inventive solution to this problem is given in the independent claims. Further developments of the invention are the subject of the dependent claims.
Die Aufgabe der Erfindung besteht darin, eine Schleif- kontaktanordnung weiter zu verbessern, um Abrieb und Verschmutzungen, die insbesondere durch das Schleifen der Bürste auf der Schleifbahn entstehen, zu sammeln und somit eine stärke Verschmutzung der Umgebung zu vermeiden. Weiterhin sollen durch die erfindungsgemäße Vorrichtung die Wartungsintervalle verlängert werden.The object of the invention is to further improve a grinding contact arrangement, in order to collect abrasion and dirt, which are caused in particular by the grinding of the brush on the slideway, and thus to avoid a strong pollution of the environment. Furthermore, the maintenance intervals are to be extended by the device according to the invention.
Die erfindungsgemäße Vorrichtung umfasst eine Schleif- kontaktanordnung mit wenigstens einer Schleifbahn, einem Bürstenhalter zur Aufnahme wenigstens einer Bürste, welche in mechanischem Eingriff und elektrischem Kontakt mit der Schleifbahn angeordnet ist . Weiterhin ist ein Sammelbehälter zur Aufnahme von Abriebpartikeln und anderen Materialien von der wenigstens einen Bürste bzw. der wenigstens einen Schleifbahn vorgesehen. Weiterhin ist eine Abdeckung vorgesehen, die im Wesentlichen einen Bürstenhalter und die wenigstens eine Bürste umfasst. Die Abdeckung hat Wände, die sich parallel zum Verlauf der Schleifbahn erstrecken und diese seitlich zusammen mit dem Bürstenblock und der wenigstens einen Bürste umschließen. Bei großen Schleifkontaktanordnungen wird durch die Abdeckung nicht die gesamte Schleifbahn in ihrer Länge, sondern nur ein Segment, welches vorzugsweise der Länge der auf der Schleifbahn laufenden Bürstenanordnung entspricht, umschlossen. Ein Sammelbehälter ist an einer Seite der Abdeckung vorgesehen, so dass die durch die Bewegung entstehende Luftströmung in diesen Sammelbehälter hineingeleitet wird.The device according to the invention comprises a grinding contact arrangement with at least one grinding path, a brush holder for receiving at least one brush, which is arranged in mechanical engagement and electrical contact with the grinding path. Furthermore, a collecting container for receiving abrasion particles and other materials from the at least one brush or the at least one grinding path is provided. Furthermore, a cover is provided which essentially comprises a brush holder and the at least one brush. The cover has walls which extend parallel to the path of the grinding path and enclose them laterally together with the brush block and the at least one brush. In large sliding contact arrangements is not covered by the cover, the entire grinding path in length, but only a segment, which preferably the length of the sliding track running brush assembly corresponds, enclosed. A collecting container is provided on one side of the cover, so that the air flow resulting from the movement is introduced into this collecting container.
Gemäß der Erfindung ist eine Abdeckung 5 oder auch ein Schutzgehäuse um diejenigen Teile der Schleifkontaktan- ordnung angebracht, in denen Abrieb produziert und verteilt wird. Diese Teile sind die Kontaktflächen der Schleifbürsten 1 in Verbindung mit den Schleifbahnen 2. Weiterhin ist eingeschlossen ein Stück der stromabwärts liegenden Seite dieser Oberflächen. Wenn die Schleifbahn 2 gegenüber der Schleifbürste 1 bewegt wird, wird das abgeriebene Material in den umgebenden Raum abgegeben und hauptsächlich durch den Luftstrom in Richtung des Pfeils 7 weiter getragen. Dies ist in den Fig. 1 und 3 veranschaulicht. Ein Sammelbehälter 4 ist stromabwärts der Kontaktpunkte zwischen den Schleifbürsten 1 und den Schleifbahnen 2 angeordnet, um das abgeriebene Material aufzufangen. Wenn die Schleifbahn 2 schnell bewegt wird, wie dies beispielsweise in Schleifringen, die in Computertomographen eingesetzt werden, der Fall ist, so wird hierdurch ein Luftstrom erzeugt, der entlang der Oberfläche der Schleifbahn 2 verläuft. Die Abdeckung 5 zur Abdeckung der Schleifkontaktanordnung übernimmt hier gleichzeitig die Funktion eines Luftführungskanals. Dieser führt den Luftstrom, der die Abriebpartikel trägt, in den Sammelbehälter 4. Durch das Sammeln des Materials wird die Menge des in die Umgebung der Schleifkontaktanordnung verteilten Abriebmaterials reduziert. Um den Luftstrom durch die Bewegung der Schleifbahn 2 zu verbessern bzw. zu erhöhen, können erfindungsgemäß Flügel 12 vorgesehen sein. Diese sind vorzugsweise an dem Träger 11, welcher die Schleifbahnen 2 trägt, angebracht. Der Sammelbehälter kann auch über weitere Luftführungseiemente, wie wenigstens ein Rohr, oder ein Schlauch mit der Abdeckung verbunden sein.According to the invention, a cover 5 or a protective housing is attached to those parts of the sliding contact arrangement in which abrasion is produced and distributed. These parts are the contact surfaces of the abrasive brushes 1 in conjunction with the slip paths 2. Also included is a portion of the downstream side of these surfaces. When the grinding path 2 is moved relative to the grinding brush 1, the abraded material is discharged into the surrounding space and carried on mainly by the air flow in the direction of the arrow 7 on. This is illustrated in FIGS. 1 and 3. A sump 4 is disposed downstream of the contact points between the abrasive brushes 1 and the slideways 2 to catch the abraded material. If the grinding path 2 is moved rapidly, as is the case for example in slip rings used in computer tomographs, this produces an air flow which runs along the surface of the grinding path 2. The cover 5 for covering the sliding contact arrangement assumes the function of an air duct at the same time here. This leads the air flow, which carries the abrasion particles, into the collecting container 4. By collecting the material, the amount of abrasive material distributed in the vicinity of the sliding contact arrangement is reduced. To the airflow through the movement To improve or increase the grinding path 2, wings 12 may be provided according to the invention. These are preferably attached to the support 11 which carries the sliding tracks 2. The collecting container can also be connected to the cover via further air guide elements, such as at least one tube, or a hose.
Weiterhin ist es möglich, den Luftstrom durch die Abdeckung 5 zu erhöhen, indem beispielsweise durch eine Zuführung 8 zusätzliche Luft eingespeist wird. So kann hier beispielsweise ein Kompressor oder auch ein Ventilator vorgesehen sein. Ebenfalls kann auch anstelle der Zuführung 8 ein Ventilator vorgesehen sein. Im Falle von Flügeln 12 zur Verstärkung des Luftstroms ist anstelle der Zuführung 8 eine Öffnung, gegebenenfalls mit Luftgleitflächen zur Einleitung des durch die Flügel 12 erzeugten Luftstroms in die Abdeckung 5 vorgesehen. Als Alternative kann auch ein Unterdruck an der Auslassseite der Abdeckung 5 bzw. des Sammelbehälters 4 vorgesehen sein. Ebenso ist eine Kombination aus Überdruck und Unterdruck möglich.Furthermore, it is possible to increase the air flow through the cover 5, for example by additional air 8 is fed by a feed. Thus, for example, a compressor or a fan may be provided here. Also, instead of the feed 8 a fan may be provided. In the case of wings 12 to increase the air flow, instead of the supply 8, an opening, optionally provided with Luftgleitflächen for introducing the air flow generated by the wings 12 in the cover 5. As an alternative, a negative pressure can also be provided on the outlet side of the cover 5 or of the collecting container 4. Likewise, a combination of overpressure and negative pressure is possible.
Weiterhin ist es vorteilhaft, in der Abdeckung 5 Platten zur Luftführung 10 vorzusehen, die den Luftstrom in Richtung des Sammelbehälters leiten.Furthermore, it is advantageous to provide in the cover 5 plates for air duct 10, which direct the flow of air in the direction of the collecting container.
Die Abdeckung 5 umfasst vorteilhafterweise ein Metall- blech. Somit kann sie gleichzeitig als elektrische Schirmung eingesetzt werden. Zudem kann durch die metallische Oberfläche eine elektrostatische Aufladung verhindert werden. Es kann aber auch zusätzlich eine hochohmige , schlecht leitende Oberfläche mit einem Oberflächenwiderstand zwischen einem kOhm und 10 MOhm, beispielsweise als Lack oder in einer anderen Form einer OberflächenbeSchichtung aufgebracht werden. Damit kann eine Kurzschlussgefahr bei Berühren anderer metallischer Teile ausgeschlossen werden. Es wird aber auch das Anziehen von elektrostatischem Staub aus der Luft der Umgebung vermieden. Besonders günstig ist eine solche schlecht leitende Oberfläche auf der Innenseite der Abdeckung 5. Dadurch wird vermieden, dass sich der Staub an der Innenseite der Abdeckung 5 ablagert, bevor er zum Sammelbehälter 4 befördert worden ist. Alternativ kann auch die Abdeckung aus einem Isolationsmaterial, beispielsweise aus Kunststoff gefertigt sein. Auch hier kann wieder eine leitfähige Oberfläche, wie zuvor beschrieben, vorgesehen sein. Der Bürstenblock 3 kann Teil der Abdeckung 5 sein. Alternativ kann er auch durch diese umschlossen werden. Die Innenwände der Abdeckung 5 und die Platten zur Luftführung 10 sollten so ausgelegt sein, dass sie keine scharfen Kanten und Unterschnitte haben, an denen sich Staub ablagern kann. Die Platten zur Luftführung 10 könnten so angeordnet werden, dass sie den Luftstrom von inneren Ecken der Abdeckung 5 wegleiten, so dass sich dort keine Verwir- belungen ergeben. Die inneren Oberflächen der Abdeckung 5, die Platten zur Luftführung 10, der Sammelbehälter 4 und der Träger der Schleifbahnen 11 könnten mit einer abweisenden Oberfläche ausgestattet sein. Dies kann beispielsweise eine Oberfläche mit Lotuseffekt oder anderen Strukturen aus Mikro- und Nanopartikeln sein. Weiterhin kann wenigstens eine Kante oder andere Struktur innerhalb der Abdeckung vorgesehen sein, um einen turbulenten Luftstrom zu erzeugen. Solche Turbulenzen können hilfreich sein, um die Schmutzpartikel von einer Oberfläche oder einer Schleifbahn, ihrem Träger oder einem Teil der Bürstenanordnung zu entfernen.The cover 5 advantageously comprises a metal sheet. Thus, it can be used simultaneously as an electrical shielding. In addition, an electrostatic charge can be prevented by the metallic surface. But it can also be an additional high-ohmic, poorly conductive surface with a surface resistance between a kohm and 10 MOhm, for example as a paint or in another form of OberflächenbeSichtung be applied. This can eliminate the risk of a short circuit when touching other metal parts. But it is also avoided the attraction of electrostatic dust from the air of the environment. Such a poorly conductive surface on the inside of the cover 5 is particularly favorable. This prevents the dust from depositing on the inside of the cover 5 before it has been conveyed to the collecting container 4. Alternatively, the cover can be made of an insulating material, for example made of plastic. Again, a conductive surface, as described above, may be provided again. The brush block 3 may be part of the cover 5. Alternatively, it can also be enclosed by them. The inner walls of the cover 5 and the air guide plates 10 should be designed so that they have no sharp edges and undercuts on which dust can be deposited. The air guide plates 10 could be arranged to direct the flow of air away from inner corners of the cover 5, so that no swirling occurs there. The inner surfaces of the cover 5, the air guide plates 10, the collecting container 4 and the carrier of the grinding tracks 11 could be provided with a repellent surface. This can be for example a surface with lotus effect or other structures of micro- and nanoparticles. Furthermore, at least one edge or other structure may be provided within the cover to one generate turbulent airflow. Such turbulence can be helpful in removing the debris from a surface or slideway, its support, or a portion of the brush assembly.
Der Sammelbehälter ist vorzugsweise ein Staubfilter, welches stromabwärts an der Abdeckung 5 angebracht ist . Er könnte ein elektrostatisches Filter oder ein E- lektretfilter enthalten. In einer anderen Ausgestaltung der Erfindung kann der Sammelbehälter 4 Material, welches Schmutzpartikel festhält, beispielsweise Gewebe oder Plüsch, enthalten. Weiterhin könnte der Sammelbehälter einen Staubbeutel, wie beispielsweise in Staubsaugern, aufweisen. Der Staubbeutel ist vorzugsweise austauschbar oder in einer austauschbaren Kassette angebracht . Eine solche Kassette kann auf einfache Weise ausgetauscht und/oder gereinigt werden. Zusätzlich kann der Sammelbehälter 4 eine Antihaftbeschich- tung aufweisen. Eine Beschichtung umfasst eine Lotusef- fekt-Beschichtung und/oder andere Kombinationen mit Mikro- und Nanopartikeln. In einer weiteren Ausgestaltung der Erfindung kann der Sammelbehälter wenigstens eine Leitfläche zur Umleitung des Luftstroms im Inneren des Sammelbehälters aufweisen. Durch diese könnten auch Verwirbelungen erzeugt werden. Hierdurch kann die Ablagerung des Staubs im Inneren des Sammelbehälters verbessert werden.The collecting container is preferably a dust filter, which is mounted downstream of the cover 5. It could contain an electrostatic filter or an electronic filter. In another embodiment of the invention, the collecting container 4 material, which holds dirt particles, such as tissue or plush included. Furthermore, the sump could have a dust bag, such as in vacuum cleaners. The dust bag is preferably replaceable or mounted in an exchangeable cassette. Such a cassette can be easily replaced and / or cleaned. In addition, the collecting container 4 may have a non-stick coating. A coating comprises a lotus effect coating and / or other combinations with micro- and nanoparticles. In a further embodiment of the invention, the collecting container may have at least one guide surface for diverting the air flow in the interior of the collecting container. Through this also turbulence could be generated. As a result, the deposition of the dust inside the collecting container can be improved.
In einer weiteren Ausgestaltung der Erfindung sind Klappen oder Flügel vorgesehen, um den Luftstrom entsprechend der Drehrichtung umzulenken. Weiterhin kann der Luftstrom, der durch die drehenden Teile verursacht wird, benutzt werden, um Luft in den Sammelbehälter zu blasen oder daraus zu saugen. Vorzugsweise ist die Unterseite des Sammelbehälters zur Aufnahme von Schmutzpartikeln, die aufgrund der Schwerkraft nach unten fallen, ausgebildet. Hier kann eine spezielle Oberfläche zur Aufnahme der Partikel, vorzugsweise aus einem porösen Material, wie beispielsweise Polyurethanschaum, oder aus einem Gewebe oder Plüsch vorgesehen sein.In a further embodiment of the invention, flaps or wings are provided to redirect the air flow according to the direction of rotation. Furthermore, the air flow caused by the rotating parts is used to blow or suck air into the sump. Preferably, the underside of the collecting container for receiving dirt particles, which fall down due to gravity, is formed. Here, a special surface for receiving the particles, preferably of a porous material, such as polyurethane foam, or of a fabric or plush be provided.
In einer weiteren Ausgestaltung der Erfindung sind Mittel zur aktiven oder passiven Anpassung der Luftströmung in Abhängigkeit von den Schleifbahnen vorgesehen. Dies kann beispielsweise durch die Anpassung von Flügelklappen oder auch durch Steuerung der Blasrichtung eines Lüfters oder ein weiteres Filter an einer anderen Seite der Abdeckung 5 realisiert sein. Beispielsweise könnten für beide Drehrichtungen an entgegengesetzten Seiten der Abdeckung 5, Filter und/oder Sammelbehälter 4 vorgesehen sein. Entsprechend kann auch durch die Anpassung von Klappen eine Anpassung der Luftströmung an die Umdrehungsgeschwindigkeit und/oder die Drehrichtung erfolgen. Entsprechend kann auch der Luftstrom in oder durch das Filter jeweils abhängig von der Drehrichtung und Drehgeschwindigkeit maximiert werden, um eine optimale Partikelentfernung zu gewährleisten. Andererseits kann auch eine Begrenzung der Strömungsgeschwindigkeit vorgesehen sein, um Strömungs- geräusche bei zu höheren Drehgeschwindigkeiten zu vermeiden. Diese Mittel zur aktiven oder passiven Anpassung der Luftströmung können an beliebiger Stelle im Luftström der Anordnung vorgesehen sein. Die Begriffe stromaufwärts und stromabwärts beziehen sich auf den Luftstrom, der in der Schleifkontaktanordnung durch die Bewegung entsteht . Ein solcher Luftstrom kann durch die Bewegung des Bürstenblocks gegenüber der Schleifbahn und/oder der Umgebung oder auch durch die Bewegung der Schleifbahn gegenüber dem Bürstenblock entstehen. Der Verlauf der Luftströmung ist immer von stromaufwärts nach stromabwärts.In a further embodiment of the invention means for active or passive adjustment of the air flow in dependence on the sliding tracks are provided. This can be realized for example by the adaptation of wing flaps or by controlling the blowing direction of a fan or another filter on another side of the cover 5. For example, could be provided for both directions of rotation on opposite sides of the cover 5, filter and / or reservoir 4. Accordingly, adaptation of the air flow to the rotational speed and / or the direction of rotation can also be effected by the adaptation of flaps. Accordingly, the air flow in or through the filter can be maximized depending on the direction of rotation and rotational speed in order to ensure optimum particle removal. On the other hand, a limitation of the flow velocity can be provided in order to avoid flow noise at higher rotational speeds. These means for active or passive adaptation of the air flow can be provided at any point in the air flow of the arrangement. The terms upstream and downstream refer to the air flow created in the sliding contact assembly by the movement. Such an air flow may be caused by the movement of the brush block relative to the grinding path and / or the environment or by the movement of the grinding path relative to the brush block. The course of the air flow is always from upstream to downstream.
Beschreibung der ZeichnungenDescription of the drawings
Die Erfindung wird nachstehend ohne Beschränkung des allgemeinen Erfindungsgedankens anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen exemplarisch beschrieben.The invention will now be described by way of example without limitation of the general inventive idea by means of embodiments with reference to the drawings.
Fig. 1 zeigt im Längsschnitt eine Ausführung einer Schleifkontaktanordnung entsprechend der Erfindung.Fig. 1 shows in longitudinal section an embodiment of a sliding contact arrangement according to the invention.
Fig. 2 zeigt einen Schnitt senkrecht der Linie A-A aus der Fig. 1, von der linken Seite der Anordnung aus Fig. 1 betrachtet .Fig. 2 shows a section perpendicular to the line A-A of FIG. 1, viewed from the left side of the arrangement of Fig. 1.
Fig. 3 zeigt einen Längsschnitt durch eine andere Ausgestaltung einer erfindungsgemäßen Schleifkontaktanordnung .Fig. 3 shows a longitudinal section through another embodiment of a sliding contact arrangement according to the invention.
Fig. 4 zeigt einen Sammelbehälter mit einem turbulenten Luftström. In der Fig. 1 ist ein Ausschnitt einer erfindungsgemäßen Vorrichtung im Schnitt dargestellt. Es sind hier beispielhaft vier Bürsten, die jeweils in einem Köcher 13 aufgenommen sind, vorgesehen. Eine Schleifkontaktan- ordnung weist mindestens eine Bürste auf. Sie kann jedoch entsprechend dem zu übertragenden Strom auch eine hohe Anzahl an Bürsten, beispielsweise 20 Bürsten aufweisen. Sind mehrere Strompfade oder auch Signalpfade gleichzeitig vorgesehen, so sind die entsprechende Anzahl von Bürsten für jeden Pfad getrennt und laufen auf den ihm zugeordneten Bahnen. Eine typische Schleif- kontaktanordnung für Computertomografen kann 50 oder mehr Bürsten umfassen. Die Bürsten sind in einem Bürstenblock 3 zusammengefasst . Ein Bürstenblock nimmt typischerweise die Köcher der Bürsten auf und kontaktiert diese. Es gibt bestimmte Konfigurationen, in denen auch mehrere Bürstenblöcke vorgesehen sind. Dies kann beispielsweise zur Erhöhung der Isolation notwendig sein. Die Bürsten stehen in Schleifkontakt mit wenigstens einer Schleifbahn 2, die auf einem Träger 11 angeordnet ist. In der hier dargestellten Anordnung bewegt sich die Schleifbahn in der durch den Pfeil 6 dargestellten Richtung gegenüber dem feststehenden Bürstenblock. Eine Abdeckung 5 umschließt den gesamten Bürstenblock 3 zusammen mit den Bürsten 1. Die Abdeckung hat Seitenwände, die sich parallel zu den Schleifbahnen 2 und seitlich zum Bürstenblock 3 mit den Bürsten 1 erstrecken. Es wird durch die Abdeckung 5 der Bürstenblock 3 mit den Bürsten 1 sowie wenigstens ein Teil der Schleifbahnen 2, der sich im Eingriff mit den Bürsten 1 befindet, umschlossen. Ein Sammelbehälter 4 für Partikel des abgeriebenen Materials ist stromab- wärts vom Bürstenblock 3 an einer Endfläche der Abdeckung 5 vorgesehen .Fig. 4 shows a collecting container with a turbulent air flow. In Fig. 1 a section of a device according to the invention is shown in section. By way of example, four brushes, each accommodated in a quiver 13, are provided here. A sliding contact arrangement has at least one brush. However, it can also have a large number of brushes, for example 20 brushes, in accordance with the current to be transmitted. If several current paths or signal paths are provided at the same time, the corresponding number of brushes are separated for each path and run on the tracks assigned to it. A typical computer tomograph grinding contact assembly may include 50 or more brushes. The brushes are combined in a brush block 3. A brush block typically receives and contacts the quivers of the brushes. There are certain configurations in which several brush blocks are provided. This may be necessary, for example, to increase the insulation. The brushes are in sliding contact with at least one grinding track 2, which is arranged on a carrier 11. In the arrangement shown here, the sliding track moves in the direction represented by the arrow 6 with respect to the stationary brush block. A cover 5 encloses the entire brush block 3 together with the brushes 1. The cover has side walls which extend parallel to the sliding tracks 2 and laterally to the brush block 3 with the brushes 1. It is enclosed by the cover 5 of the brush block 3 with the brushes 1 and at least part of the sliding tracks 2, which is in engagement with the brushes 1. A collecting container 4 for particles of the abraded material is downstream is provided by the brush block 3 on an end surface of the cover 5.
Die Abdeckung 5 ist als Luftführungskanal ausgelegt, um den Luftstrom, der durch die Bewegung der Schleifbahn 2 entsteht, zu führen. Mit diesem Luftström werden die Partikel des Abriebmaterials von den Bürsten 1 entlang der Richtung des Pfeils 7 in den Sammelbehälter geführt .The cover 5 is designed as an air duct to guide the air flow caused by the movement of the grinding path 2. With this air flow, the particles of the abrasive material are guided by the brushes 1 along the direction of the arrow 7 into the collecting container.
In Fig. 2 ist ein Schnitt senkrecht zur Darstellung aus Fig. 1 entlang der Linie A-A, betrachtet von der linken Seite, dargestellt. Gezeigt werden drei Schleifbahnen 2, die nebeneinander auf dem Träger 11 angebracht sind. Weiterhin sind drei Bürsten 1 im Eingriff mit den Schleifbahnen 2 dargestellt. Entsprechend der Fig. 1 sind pro Schleifbahn jeweils vier Bürsten hintereinander angeordnet, von denen in Fig. 2 jeweils nur eine sichtbar ist. Die hier dargestellte Anordnung hat somit 12 Bürsten. Die Wände der Abdeckung 5 umschließen den Bürstenhalter 3 , zusammen mit den Bürsten 1 in den Köchern 13. Die Abdeckung erstreckt sich bis nahe an den Träger der Schleifbahnen, so dass sie das Segment der Schleifbahnen in der Nähe der Bürsten möglichst gut umschließt .In Fig. 2 is a section perpendicular to the illustration of FIG. 1 along the line A-A, viewed from the left side, shown. Shown are three sliding tracks 2, which are mounted side by side on the support 11. Furthermore, three brushes 1 are shown in engagement with the sliding tracks 2. According to FIG. 1, four brushes are arranged in succession for each grinding path, of which only one is visible in FIG. 2. The arrangement shown here thus has 12 brushes. The walls of the cover 5 enclose the brush holder 3, together with the brushes 1 in the quivers 13. The cover extends close to the support of the slideways, so that it surrounds the segment of the slideways in the vicinity of the brush as well as possible.
In Fig. 3 ist eine Darstellung, ähnlich zu derjenigen aus Fig. 1 dargestellt. In dieser Ausführungsform ist an dem stromaufwärts gelegenen Ende der Abdeckung 5 eine Versorgungsleitung 8 vorgesehen, um beispielsweise Pressluft oder ein anderes Gas in die Anordnung einzu- blasen und somit eine Strömung in Richtung des stromab- wärts gelegenen Endes auf der anderen Seite der Abdeckung zu erzeugen. Weiterhin sind noch Luftführungsplatten 10 vorgesehen, um den Luftstrom, wie beispielsweise durch den Pfeil 7 dargestellt, in spezielle Richtungen zu führen oder auch gezielt zu verwirbeln. Diese Führungsplatten sind in jeder anderen Kombination, auch ohne das Zuführungsrohr 8 einsetzbar. Weiterhin sind noch Flügel 12 dargestellt, welche an den Träger 11 der Schleifbahnen 2 angebracht sind, um eine zusätzliche Strömung zu erzeugen. Auch diese Flügel sind mit jeder anderen Ausführung, beispielsweise auch derj enigen aus Fig . 1 kombinierbar .In Fig. 3 is a representation, similar to that shown in FIG. 1. In this embodiment, a supply line 8 is provided at the upstream end of the cover 5 in order, for example, to blow compressed air or another gas into the arrangement, and thus to flow in the direction of the downstream flow. down to the end on the other side of the cover. Furthermore, air guide plates 10 are still provided to guide the air flow, as shown for example by the arrow 7, in specific directions or to swirl targeted. These guide plates can be used in any other combination, even without the feed tube 8. Furthermore, wings 12 are still shown, which are attached to the carrier 11 of the sliding tracks 2, to produce an additional flow. These wings are with any other design, for example, derj enigen of FIG. 1 combinable.
Fig. 4 zeigt einen Sammelbehälter, in dem die Luft über eine Kante 9 geführt wird, um Turbulenzen zu erzeugen. Im Allgemeinen wird eine Turbulenz hier durch einen Abriss der Strömung entlang einer Fläche am Ende der Fläche erreicht . Die Luft kann nun den Sammelbehälter durch Löcher 14 verlassen, die durch ein weiteres Filter, insbesondere auch durch ein elektrostatisches Filter weiter gefiltert werden kann. Die Turbulenzen im Inneren des Sammelbehälters sorgen dafür, dass im Inneren des Sammelbehälters Staubpartikel aus der Luftströmung ausfallen und dort abgelagert werden. Dieser Effekt kann durch die Schwerkraft günstig beein- flusst werden. Sobald die Staubpartikeln aus dem Haupt- luftstrom entfernt sind, reduziert sich die Geschwindigkeit und sie können in Fallen gefangen werden. Diese Fallen weisen entweder selbst Flügel oder Platten, vorzugsweise aus einem porösen Material auf, welches die turbulente Luft abweist um eine weitere Verteilung des Staubs zu verhindern. Fig. 4 shows a collecting container in which the air is guided over an edge 9 in order to generate turbulence. In general, turbulence is achieved here by demolition of the flow along a surface at the end of the surface. The air can now leave the sump through holes 14, which can be further filtered by another filter, in particular by an electrostatic filter. The turbulences in the interior of the collecting container ensure that dust particles from the air flow inside the collecting container precipitate and are deposited there. This effect can be favorably influenced by gravity. Once the dust particles are removed from the main airflow, the speed is reduced and they can be trapped in traps. These traps either have their own wings or plates, preferably of a porous material, which repels the turbulent air to prevent further distribution of the dust.

Claims

PATENTANSPRÜCHE
1. Schleifkontaktanordnung umfassend wenigstens eine Schleifbahn (2) ,- einen Bürstenblock zur Aufnahme wenigstens einer Schleifbürste (13) , welche in schleifendem Kontakt mit der wenigstens einen Schleifbahn (2) während einer relativen Bewegung zwischen der Schleifbürste (13) und der wenigstens einen Schleifbahn (2) steht, und wenigstens einen Sammelbehälter (4) zur Aufnahme von Abriebpartikeln von der wenigstens einen Schleifbürste (13) und/oder der wenigstens einen Schleif- bahn (2) , dadurch gekennzeichnet dass, eine Abdeckung (5) vorgesehen ist, welche im Wesentlichen den Bürstenblock (3) und die wenigstens eine Bürste (1) umgibt, wobei die Abdeckung Wände aufweist, die sich wenigstens entlang einer Richtung der Schleifbahn und entlang dem Bürstenhalter erstrecken, der Sammelbehälter stromabwärts bezogen auf den Luftström an der Abdeckung (5) angebracht ist, und die Abdeckung derart ausgebildet ist, dass sie einen Luftstrom, der durch die Bewegung der Schleifbahn gegenüber dem Bürstenblock erzeugt wird, zu dem Sammelbehälter leitet.A sliding contact arrangement comprising at least one sanding track (2), - a brush block for receiving at least one sanding brush (13) in sliding contact with the at least one sanding track (2) during relative movement between the sanding brush (13) and the at least one sanding track (2), and at least one collecting container (4) for receiving abrasive particles from the at least one abrasive brush (13) and / or the at least one sanding track (2), characterized in that a cover (5) is provided which substantially surrounding the brush block (3) and the at least one brush (1), the cover having walls extending at least along one direction of the grinding path and along the brush holder, the collecting container downstream of the air flow on the cover (5). is mounted, and the cover is formed such that it against a flow of air, the geg by the movement of the slideway is generated over the brush block, leads to the sump.
2. Schleifkontaktanordnung nach Anspruch 1, dadurch gekennzeichnet dass, Mittel zur Erzeugung eines Überdrucks an einem stromaufwärts, bezogen auf den Luftstrom, angeordneten Ende des Sammelbehälters (5) vorgesehen sind.2. sliding contact arrangement according to claim 1, characterized in that Means for generating an overpressure at an upstream, based on the air flow, arranged end of the collecting container (5) are provided.
3. Schleifkontaktanordnung nach Anspruch 1, dadurch gekennzeichnet dass,3. sliding contact arrangement according to claim 1, characterized in that
Mittel zur Erzeugung eines Unterdrucks in dem Sammelbehälter (4) vorgesehen sind.Means for generating a negative pressure in the collecting container (4) are provided.
4. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, ein Gebläse oder Ventilator an dem stromaufwärts, bezogen auf den Luftstrom, liegenden Ende der Abdeckung vorgesehen ist, um einen zusätzlichen Luftstrom durch die Abdeckung von dem stromaufwärts gelegenen Ende zum stromabwärts gelegenen Ende zu erzeugen.4. sliding contact arrangement according to one of the preceding claims, characterized in that a fan or fan at the upstream, based on the air flow, lying end of the cover is provided to an additional air flow through the cover from the upstream end to the downstream end to produce.
5. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, wenigstens eine Luftführungsplatte (10) vorgesehen ist, die innerhalb der Abdeckung (5) den Luftstrom in eine Richtung zu dem Sammelbehälter (4) leitet.5. sliding contact arrangement according to one of the preceding claims, characterized in that, at least one air guide plate (10) is provided, which passes within the cover (5) the air flow in a direction to the collecting container (4).
6. Schieifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, der Sammelbehälter (4) ein Staubfilter umfasst, welches auf der stromabwärts liegenden Seite, bezogen auf den Luftstrom der Abdeckung (5) angebracht werden kann.6. Schieifkontaktanordnung according to any one of the preceding claims, characterized in that, the collecting container (4) comprises a dust filter, which on the downstream side, based can be attached to the air flow of the cover (5).
7. Schleifkontaktanordnung nach Anspruch 6, dadurch gekennzeichnet dass, der Sammelbehälter (4) ein elektrostatisches Staubfilter umfasst .7. sliding contact arrangement according to claim 6, characterized in that, the collecting container (4) comprises an electrostatic dust filter.
8. Schleifkontaktanordnung nach Anspruch 6, dadurch gekennzeichnet dass, der Sammelbehälter (4) ein Elektretfilter umfasst.8. sliding contact arrangement according to claim 6, characterized in that, the collecting container (4) comprises an electret filter.
9. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, der Sammelbehälter (4) einen Staubbeutel entsprechend einem Staubbeutel bei Staubsaugern umfasst .9. sliding contact arrangement according to one of the preceding claims, characterized in that, the collecting container (4) comprises a dust bag corresponding to a dust bag in vacuum cleaners.
10. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, der Sammelbehälter (4) einen austauschbaren Staubsammelbehälter umfasst .10. sliding contact arrangement according to one of the preceding claims, characterized in that, the collecting container (4) comprises an exchangeable dust collecting container.
11. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, wenigstens eine der Innenflächen der Abdeckung (5) , Luftführungsplatten (10) , Sammelbehälter (4) und der Träger (11) der Schleifbahnen mit einer schmutzabweisenden Oberfläche wie aus Mikro- und Nanoparti- keln versehen ist. 11. Sliding contact arrangement according to one of the preceding claims, characterized in that, at least one of the inner surfaces of the cover (5), air guide plates (10), collecting container (4) and the carrier (11) of the sliding tracks with a dirt-repellent surface such as micro- and Nanoparti - is provided.
12. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, wenigstens eine der Innenflächen der Abdeckung (5) , Luftführungsplatten (10) , Sammelbehälter (4) und der Träger (11) der Schleifbahnen mit einer Oberflachen- beschichtung versehen ist, die elektrostatische Aufladung verhindert .12. sliding contact arrangement according to one of the preceding claims, characterized in that, at least one of the inner surfaces of the cover (5), air guide plates (10), collecting container (4) and the carrier (11) of the sliding tracks is provided with a surface coating, the electrostatic Prevents charging.
13. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, der Sammelbehälter (4) Mittel zu Erzeugung eines turbulenten Luftstroms umfasst, welche den Luftstrom veranlassen, abgeriebene Partikel in den Sammelbehälter abzugeben.13. sliding contact arrangement according to one of the preceding claims, characterized in that, the collecting container (4) comprises means for generating a turbulent air flow, which cause the air flow to deliver abraded particles into the collecting container.
14. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, der Sammelbehälter (4) Mittel zur Erzeugung von Turbulenzen durch einen Strömungsabriss eines Luft- stroms entlang eines Flügels an dem Ende des Flügels aufweist, so dass der Luftstrom abgeriebene Partikel in den Sammelbehälter abgibt .14. sliding contact arrangement according to one of the preceding claims, characterized in that the collecting container (4) comprises means for generating turbulence by a stall of an air flow along a wing at the end of the wing, so that the air stream emits abraded particles into the collecting container ,
15. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass, der Luftström aktiv oder passiv in Abhängigkeit von Richtung und/oder Geschwindigkeit der Schleifbahn gegenüber dem Bürstenblock durch aktive oder passive Anpassung von Flügeln, Klappen, der Strömungsrichtung eines Ventilators oder ein zusätzliches Filter angepasst wird.15. sliding contact arrangement according to one of the preceding claims, characterized in that, the air flow active or passive depending on the direction and / or speed of the grinding path is adapted to the brush block by active or passive adaptation of wings, flaps, the flow direction of a fan or an additional filter.
16. Schleifkontaktanordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet dass,16. sliding contact arrangement according to one of the preceding claims, characterized in that
Mittel wie zum Beispiel Flügel in vorgegebenen Abständen entlang des Trägers (11) der Schleifbahn vorgesehen sind, um den Luftstrom durch die Abdeckung (5) zu verwirbeln. Means, such as wings, are provided at predetermined intervals along the carrier (11) of the grinding path to fluidize the air flow through the cover (5).
EP07856178A 2006-11-14 2007-11-14 Sliding contact arrangement with wear elimination Active EP2084789B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/559,756 US8829761B2 (en) 2006-11-14 2006-11-14 Sliding contact assembly with dust removal
PCT/EP2007/009839 WO2008058721A1 (en) 2006-11-14 2007-11-14 Sliding contact arrangement with wear elimination

Publications (2)

Publication Number Publication Date
EP2084789A1 true EP2084789A1 (en) 2009-08-05
EP2084789B1 EP2084789B1 (en) 2013-03-06

Family

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Application Number Title Priority Date Filing Date
EP07856178A Active EP2084789B1 (en) 2006-11-14 2007-11-14 Sliding contact arrangement with wear elimination

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Country Link
US (1) US8829761B2 (en)
EP (1) EP2084789B1 (en)
JP (1) JP5213871B2 (en)
CN (1) CN101553960B (en)
DE (1) DE102007054675A1 (en)
WO (1) WO2008058721A1 (en)

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Also Published As

Publication number Publication date
WO2008058721A1 (en) 2008-05-22
DE102007054675A1 (en) 2008-05-15
US8829761B2 (en) 2014-09-09
US20080111440A1 (en) 2008-05-15
JP2010509741A (en) 2010-03-25
CN101553960B (en) 2012-01-04
CN101553960A (en) 2009-10-07
EP2084789B1 (en) 2013-03-06
JP5213871B2 (en) 2013-06-19

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